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src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F95ada378a5db7c4e3a2db1708766fefa.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Ff874967b7ad7bb0099642865ffe63c2a.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fab24c00bb67ee2811a65ad5016d72be5.png\">","设曲线\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4495dd05eb09d87a896800d41913f822.png\">为连接\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F89a15ce136a836d18e1f89ff2e8f094e.png\">与\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fc402ae0b4080848474b1d624a36e2d9f.png\">的直线段,计算 \u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F94700b6bb752f0cda70a63542b698057.png\">,其值为( )",{"answer":68,"createTime":59,"id":69,"options":70,"question":74,"source":24,"type":25},[],394403955,[71,72,73,63],"\u003Cimg 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src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F5b964426cfe5e1d2faa747916757c218.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fd7132c665df9b51cb653b284a5656df3.png\">","\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F3566028865309768796d72c4d9fa0305.png\">","设曲线\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F4495dd05eb09d87a896800d41913f822.png\">为抛物线\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F39857f4bb0dd9e9f6936c7570b726665.png\">从\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F678ecdd38ef0cf3914f713c45a19a0e8.png\">到点\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002Fa0e821ef13979bb8b02feb8804208db2.png\">的一段弧,则\u003Cimg src=\"https:\u002F\u002Ftihai-oss-cloud.itihey.com\u002Fimg\u002F437693fe3e2e486ddceeea8178fe83ce.png\">的值为( 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